Implement noexcept operator (5.3.7)
* c-common.c (c_common_reswords): Add noexcept.
* c-common.h (enum rid): Add RID_NOEXCEPT.
cp/
* cp-tree.def (NOEXCEPT_EXPR): New.
* except.c (check_noexcept_r, finish_noexcept_expr): New.
* cp-tree.h: Declare finish_noexcept_expr.
* parser.c (cp_parser_unary_expression): Parse noexcept-expression.
* pt.c (tsubst_copy_and_build): And tsubst it.
(type_dependent_expression_p): Handle it.
(value_dependent_expression_p): Handle it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160297 138bc75d-0d04-0410-961f-82ee72b054a4